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HandleMessageMiddleware.php
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HandleMessageMiddleware.php
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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Messenger\Middleware;
use Symfony\Component\Messenger\Envelope;
use Symfony\Component\Messenger\Exception\NoHandlerForMessageException;
use Symfony\Component\Messenger\Handler\HandlersLocatorInterface;
use Symfony\Component\Messenger\Stamp\HandledStamp;
/**
* @author Samuel Roze <samuel.roze@gmail.com>
*
* @experimental in 4.2
*/
class HandleMessageMiddleware implements MiddlewareInterface
{
private $handlersLocator;
private $allowNoHandlers;
public function __construct(HandlersLocatorInterface $handlersLocator, bool $allowNoHandlers = false)
{
$this->handlersLocator = $handlersLocator;
$this->allowNoHandlers = $allowNoHandlers;
}
/**
* {@inheritdoc}
*
* @throws NoHandlerForMessageException When no handler is found and $allowNoHandlers is false
*/
public function handle(Envelope $envelope, StackInterface $stack): Envelope
{
$handler = null;
$message = $envelope->getMessage();
foreach ($this->handlersLocator->getHandlers($envelope) as $alias => $handler) {
$envelope = $envelope->with(HandledStamp::fromCallable($handler, $handler($message), \is_string($alias) ? $alias : null));
}
if (null === $handler && !$this->allowNoHandlers) {
throw new NoHandlerForMessageException(sprintf('No handler for message "%s".', \get_class($envelope->getMessage())));
}
return $stack->next()->handle($envelope, $stack);
}
}